diff --git a/cpp/2204/220401.cpp b/cpp/2204/220401.cpp
new file mode 100644
index 0000000..7586cd7
--- /dev/null
+++ b/cpp/2204/220401.cpp
@@ -0,0 +1,15 @@
+#include <vector>
+#include <algorithm>
+
+/**
+ * 344. Reverse String
+ * Write a function that reverses a string. The input string is given as an array of characters s.
+ * You must do this by modifying the input array in-place with O(1) extra memory.
+ */
+
+class Solution {
+public:
+	static void reverseString(std::vector<char>& s) {
+		std::reverse(s.begin(), s.end());
+	}
+};
diff --git a/cpp/2204/CMakeLists.txt b/cpp/2204/CMakeLists.txt
index 1610c1f..67a70c6 100644
--- a/cpp/2204/CMakeLists.txt
+++ b/cpp/2204/CMakeLists.txt
@@ -3,4 +3,4 @@ PROJECT(2204)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2204 220401-CN.cpp)
+ADD_EXECUTABLE(2204 220401.cpp)